【Q&A Question 130】2018.05.10
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【Q&A Question 130】May 10, 2018: Briefly describe the precautions that should be taken when using hydrofining catalysts ①Prevent the vulcanized catalyst from coming into contact with air, as contact with air can lead to ignition or oxidative deactivation ； ②Avoid large amounts of poison coming into contact with the catalyst ； ③Prevent the catalyst bed from overheating, which could lead to melting of the catalyst surface, coking of the feed oil, carbon deposition on the catalyst surface, and a decrease in its activity ； ④Maintain an appropriate hydrogen-to-oil ratio to prevent coking of the feed oil ； ⑤The heating and cooling processes should be carried out slowly to prevent the catalyst from breaking apart ； ⑥Before using the catalyst, a quality check must be performed on it (check for certification documents and usage instructions, verify whether it is damp or contaminated, and decide whether dust and powder removal is necessary based on the degree of damage) ； ⑦The reactor must be dried before loading the material ； ⑧Ensure proper loading of the catalyst. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below. The APP short-video skills competition has started! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670
①Prevent the vulcanized catalyst from coming into contact with air, as contact with air can lead to ignition or oxidative deactivation； ②Avoid large amounts of poison coming into contact with the catalyst ； ③Prevent the catalyst bed from overheating, which could lead to melting of the catalyst surface, coking of the feed oil, carbon deposition on the catalyst surface, and a decrease in its activity ； ④Maintain an appropriate hydrogen-to-oil ratio to prevent coking of the feed oil ； ⑤The heating and cooling processes should be carried out slowly to prevent the catalyst from breaking apart ； ⑥Before using the catalyst, a quality check must be performed on it (check for certificates of conformity and user instructions, as well as whether it is damp or contaminated; determine whether dust and powder removal are necessary based on the degree of damage) ； ⑦The reactor must be dried before loading the material ； ⑧Ensure proper loading of the catalyst.
Filling aspect: 1. Prioritize dense-phase filling to ensure uniform filling； 2. The porcelain balls and catalysts are properly graded ； 3. Accessories such as the inlet distributor, rust basket, bed cold hydrogen plate, and bed support are installed properly and firmly ； Operation aspects: 1. Drying must be thorough ； 2. Thorough vulcanization ； 3. Temperature and pressure should be increased or decreased gradually, in strict accordance with the specified requirements ； 4. It is strictly prohibited for water-containing raw materials to enter the bed layer ； 5. Use a reasonable space velocity ； 6. Ensure an adequate hydrogen-to-oil ratio to minimize catalyst coking as much as possible ； 7. Reverse pressure release is prohibited ； 8. Address any abnormalities promptly.
①Prevent the vulcanized catalyst from coming into contact with air, as contact with air can lead to ignition or oxidative deactivation； ②Avoid large amounts of poison coming into contact with the catalyst ； ③Prevent the catalyst bed from overheating, which could lead to melting of the catalyst surface, coking of the feed oil, carbon deposition on the catalyst surface, and a decrease in its activity ； ④Maintain an appropriate hydrogen-to-oil ratio to prevent coking of the feed oil ； ⑤The heating and cooling processes should be carried out slowly to prevent the catalyst from breaking apart ； ⑥Before using the catalyst, a quality check must be performed on it (check for certification documents and usage instructions, verify whether it is damp or contaminated, and decide whether dust and powder removal is necessary based on the degree of damage) ； ⑦The reactor must be dried before loading the material ； ⑧Ensure proper loading of the catalyst.
Control the reaction temperature well； Control the impurities in raw materials ； Control the hydrogen-to-oil ratio properly ； Control the reaction pressure well
①Prevent the vulcanized catalyst from coming into contact with air, as contact with air can lead to ignition or oxidative deactivation； ②Avoid large amounts of poison coming into contact with the catalyst ； ③Prevent the catalyst bed from overheating, which could lead to melting of the catalyst surface, coking of the feed oil, carbon deposition on the catalyst surface, and a decrease in its activity ； ④Maintain an appropriate hydrogen-to-oil ratio to prevent coking of the feed oil ； ⑤The heating and cooling processes should be carried out slowly to prevent the catalyst from breaking apart ； ⑥Before using the catalyst, a quality check must be performed on it (check for certificates of conformity and user instructions, as well as whether it is damp or contaminated; determine whether dust and powder removal are necessary based on the degree of damage) ； ⑦The reactor must be dried before loading the material ； ⑧Ensure proper loading of the catalyst.
①Prevent the vulcanized catalyst from coming into contact with air, as exposure to air can lead to ignition or oxidation-induced deactivation; ② Avoid contact between large amounts of toxic substances and the catalyst； ③Prevent the catalyst bed from overheating, which could lead to melting of the catalyst surface, coking of the feed oil, carbon deposition on the catalyst surface, and a decrease in its activity ； ④Maintain an appropriate hydrogen-to-oil ratio to prevent coking of the feed oil; ⑤ Temperature changes should be made slowly to avoid catalyst damage; ⑥ Before use, the catalyst must undergo quality inspection (check for certificates of conformity and usage instructions, as well as whether it is damp or contaminated; decide whether dust or powder removal is necessary based on the degree of damage); ⑦ The reactor must be dried before the catalyst is loaded into it; ⑧ Ensure proper loading of the catalyst.
①Prevent the vulcanized catalyst from coming into contact with air, as contact with air can lead to ignition or oxidative deactivation； ②Avoid large amounts of poison coming into contact with the catalyst ； ③Prevent the catalyst bed from overheating, which could lead to melting of the catalyst surface, coking of the feed oil, carbon deposition on the catalyst surface, and a decrease in its activity ； ④Maintain an appropriate hydrogen-to-oil ratio to prevent coking of the feed oil ； ⑤The heating and cooling processes should be carried out slowly to prevent the catalyst from breaking apart ； ⑥Before using the catalyst, a quality check must be performed on it (check for certificates of conformity and user instructions, as well as whether it is damp or contaminated; determine whether dust and powder removal are necessary based on the degree of damage) ； ⑦The reactor must be dried before loading the material ； ⑧Ensure proper loading of the catalyst.
Filling aspect: 1. Prioritize dense-phase filling to ensure uniform filling； 2. The porcelain balls and catalysts are properly graded ； 3. Accessories such as the inlet distributor, rust basket, bed cold hydrogen plate, and bed support are installed properly and firmly ； Operation aspects: 1. Drying must be thorough ； 2. Thorough vulcanization ； 3. Temperature and pressure should be increased or decreased gradually, in strict accordance with the specified requirements ； 4. It is strictly prohibited for water-containing raw materials to enter the bed layer ； 5. Use a reasonable space velocity ； 6. Ensure an adequate hydrogen-to-oil ratio to minimize catalyst coking as much as possible ； 7. Reverse pressure release is prohibited ； 8. Address any abnormalities promptly.
1. Prioritize dense phase filling to ensure uniform filling； 2. The porcelain balls and catalysts are properly graded ； 3. Accessories such as the inlet distributor, rust basket, bed cold hydrogen plate, and bed support are installed properly and firmly ；
1. Prevent the sulfurized catalyst from coming into contact with air, as this can lead to ignition and oxidative deactivation. 2. Avoid large amounts of toxins coming into contact with the catalyst. 3. Prevent the catalyst bed from overheating, which could cause coking of the catalyst and a decrease in its activity. 4. Maintain an appropriate hydrogen-to-oil ratio to prevent coking of the feed oil. 5. The heating and cooling processes should be carried out slowly to prevent the catalyst from breaking. 6. A quality check of the catalyst should be conducted before using it. 7. The reactor must be dried before loading the material. 8. Ensure proper loading of the catalyst.